package com.cdx.dxmall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.cdx.dxmall.common.constant.ProductConstant;
import com.cdx.dxmall.common.utils.PageUtils;
import com.cdx.dxmall.common.utils.Query;
import com.cdx.dxmall.product.dao.AttrAttrgroupRelationDao;
import com.cdx.dxmall.product.dao.AttrDao;
import com.cdx.dxmall.product.dao.AttrGroupDao;
import com.cdx.dxmall.product.dao.CategoryDao;
import com.cdx.dxmall.product.entity.AttrAttrgroupRelationEntity;
import com.cdx.dxmall.product.entity.AttrEntity;
import com.cdx.dxmall.product.entity.AttrGroupEntity;
import com.cdx.dxmall.product.entity.CategoryEntity;
import com.cdx.dxmall.product.service.AttrAttrgroupRelationService;
import com.cdx.dxmall.product.service.AttrService;
import com.cdx.dxmall.product.service.CategoryService;
import com.cdx.dxmall.product.vo.AttrGroupRelationVO;
import com.cdx.dxmall.product.vo.AttrRespVo;
import com.cdx.dxmall.product.vo.AttrVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationService relationService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    AttrAttrgroupRelationDao relationDao;

    @Autowired
    AttrGroupDao attrGroupDao;

    @Autowired
    CategoryDao categoryDao;



    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public void saveAttr(AttrVO attr) {
        AttrEntity entity = new AttrEntity();
        BeanUtils.copyProperties(attr,entity);
        this.save(entity);

        if(entity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(entity.getAttrId());
            relationService.save(relationEntity);
        }

    }

    // attr_type ==1  的时候查询基本属性； attr_type == 0 的时候查询销售属性
    @Transactional
    @Override
    public PageUtils queryBaseList(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type","base".equalsIgnoreCase(type)?ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode():ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if(catelogId != 0) {
            queryWrapper.eq("catelog_id",catelogId);
        }
        
        String key = ((String) params.get("key"));
        if(!StringUtils.isEmpty(key)) {
            //attr_id  attr_name
            queryWrapper.and((wrapper) -> {
                wrapper.eq("attr_id",key).or().like("attr_name",key);
            });
        }

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );

        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map((attrEntity) -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            //1设置分类和分组的名称
            if("base".equalsIgnoreCase(type)) {
                AttrAttrgroupRelationEntity attrId = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (attrId != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrId.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }

            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }

            return attrRespVo;
        }).collect(Collectors.toList());

        pageUtils.setList(respVos);

        return pageUtils;
    }

    /***
     * 查询属性form信息。
     * 点击修改的时候
     * @param attrId
     * @return
     */
    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        AttrRespVo respVo = new AttrRespVo();

        AttrEntity entity = this.getById(attrId);
        BeanUtils.copyProperties(entity,respVo);


        //1.设置分组信息
        if(ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() == (entity.getAttrType())) {
            AttrAttrgroupRelationEntity attrgroupRelation = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
            if(attrgroupRelation != null) {
                respVo.setAttrGroupId(attrgroupRelation.getAttrGroupId());
                AttrGroupEntity attrGroup = attrGroupDao.selectById(attrgroupRelation.getAttrGroupId());
                respVo.setGroupName(attrGroup.getAttrGroupName());
            }
        }

        
        //2.设置分类路径
        Long catelogId = entity.getCatelogId();

        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        respVo.setCatelogPath(catelogPath);
        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if(categoryEntity != null) {
            respVo.setCatelogName(categoryEntity.getName());
        }
        return respVo;
    }

    @Transactional(rollbackFor ={})
    @Override
    public void updateAttr(AttrVO attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr,attrEntity);
        this.updateById(attrEntity);

        //1.修改分组关联关系
        if(ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() == (attrEntity.getAttrType())) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());

            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            if(count > 0) {
                relationDao.update(relationEntity, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            }else {
                relationDao.insert(relationEntity);
            }
        }



    }



    /***
     * 根据分组id查找关联的所有属性
     * //属性分组获得关联属性
     * @param attrgroupId
     * @return
     */
    @Override
    public List<AttrEntity> getRelationAttr(String attrgroupId) {
        List<AttrAttrgroupRelationEntity> attrgroupRelation =
                relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        List<Long> attrIds = attrgroupRelation.stream().map((attr) -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        if(attrIds.isEmpty()) {
            return  null;
        }
        Collection<AttrEntity> attrEntities = this.listByIds(attrIds);
        return (List<AttrEntity>) attrEntities;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVO[] vo) {
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vo).stream().map((entity) -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(entity, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());
        relationDao.deleteBatchRelation(entities);
    }


    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, String attrgroupId) {
        //1.当前分组只能关联自己所属分类里的所属属性
        AttrGroupEntity attrGroup = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroup.getCatelogId();
        //2.当前分组只能关联没有被引用的属性
        //2.1 当前分类下的其他分组
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
        List<Long> collect = group.stream().map(item -> {
            return item.getAttrGroupId();
        }).collect(Collectors.toList());
        //2.2 这些分组关联的属性
        List<AttrAttrgroupRelationEntity> groupId = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
        List<Long> attrIds = groupId.stream().map(item -> {
            return item.getAttrId();
        }).collect(Collectors.toList());

        //2.3 从当前分类的所有属性中提出这些属性
        QueryWrapper<AttrEntity> wrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type",ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        if(!attrIds.isEmpty()) {
            wrapper.notIn("attr_id", attrIds);
        }
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and(w -> {
                w.eq("attr_id",key).or().like("attr_name",key);
            });
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), wrapper);
        PageUtils pageUtils = new PageUtils(page);
        return pageUtils;
    }

}